Island



C. A. BRINK.

COP HOLDER.

APPLICATION FILED MAR. I8. 1918.

l 3 1 'Y, 5&5 Patented Sept. 30, 1919.

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CARL A. BRINK, 0F PROVIDENCE, RHODE ISLAND, ASSIGNOR T0 UNIVERSAL WINDING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

COP-HOLDER.

Specification of Letters Patent.

Patented Sept. 30, 1919.

To all whom it may concern:

Be it known that I, CARL A. BR1NK,'t citizen of the United States, residing at Provideuce, in the county of Providence, State of Rhode Island, have invented certain new and useful Improvements in Cop-Holders, of which the following is a specification.

My invention relates to cop-holders for winding, braiding or other textile machines, and consists particularly of improvements in the construction and method of operation of the same. My improved cop-holder is intended for use with either paper coptubes and quills, or wooden bobbins and spools, and the object of the improvement is to rovide a simple and efiicient means for grlpping the bore of the tube or bobbin to secure it rotatively on its spindle or mandrel.

The manner and means for carrying out the improvement are fully described in the following specification, illustrated by the accompanying drawings, in which like reference characters represent like parts. In the drawings Figure 1 is a side view of a spindle or mandrel showing a cop-tube applied thereto to. illustrate my improved means for securing it rotatively therewith;

Fig. 2, a detail view in perspective of one of the longitudinal blades employed for holding the cop-tube rotatively with the spindle;

Fig. 3, an end view of the cop-holder;

Fig. 4, a sectional view on the line w-m of Fig. l; and

5, a similar view taken on the line g y of Fig. 1.

Referring first to Fig. 1, 2 designates a cylindrical spindle or mandrel, which as here shown is provided at one end with a reduced shank 3 formed with screw-threads at 4 to adapt it to be attached to the end of a winding-shaft or other rotating element of the machine. C represents the coptube which fits over the spindle 2, and the means for securing it rotatively therewith comprises essentially a plurality of longtudinally-extending spring-blades 5. In the present embodiment. of the invention the spindle 2 is illustrated as being formed with four longitudinal slots 6 for receiving the spring-blades 5. My improvement is not limited as to this particular, however, as in some instances it has been found preferable to use three blades instead of four. The

'slots 6 in the spindle 2 are relatively shallow, and the blades 5 fit snugly thereinto at their opposite ends. -At the inner end a collar 7 is slipped on over the spindle 2, after the blades 5 have been placed in their slots 6, and is secured thereto by suitable means, such as the set-screw 8, to hold the blades in place. At their opposite ends the blades 5 are bent down in hook-portions 9, see also Fig. 2, which are adapted to hook into a recess 10 at the end of the spindle 2. The recess 10 is preferably formed by counterboring the spindle 2 to form an undercut, beveled shoulder, and this end of the spindle is also bored axially and threaded as shown at 11. A screw 12 is adapted to be inserted in the threaded bore 11 of the spindle 2 and the under side of its head 13 is beveled at 14 to correspond with the beveled recess 10. After the blades 5 have been placed in their slots 6, with their hooked ends 9 in position against the undercut recess 10, the screw 12 is screwed into place to set its beveled head 13 against the ends of the hooks. In this way the blades are held snugly in place at their outer ends while their inner ends are'retained in the slots 6 by means of the collar 7. It will be noted from reference to Fig. 3 that the bore of the collar 7 is slotted at 15 opposite the slots 6 in the spindle 2. This provides a slight clearance for the blades 5 to allow a sliding movement at their inner ends for a purpose as later explained.

Referring now particularly to Fig. 2, each blade 5 is constructed of relatively flat sheet- Inetal and is twisted spirally on a longitudinal axis. This twisting of the blade 5 forces one of its lateral edges upwardly at an angle to its main plane as shown at a, while the opposite edge is inclined upwardly at b. The purpose of this twisting or distorting of the blades 5 is to provide sharp edges adapted to project radially outward from-the periphery of the spindle 2 to en gage the interior of the bore of the coptube when the latter is slipped onto the spindle. As shown in Fig. 4, one edge a of the blade 5 projects outwardly in one direction to adapt it to bite into the interior surface of the tube C to hold the latter from movement on the spindle in the direction indicated by the arrow 6. The opposite, upturned edge I; ofthe blade 5 projects into the bore of the cop-tube at a reverse angle,

.as shown in Fig. 5, to prevent the tube from most cases, however, it is preferable to provide means for securing the tube from turning movement in both directlons, and the present construction is adapted for thls purpose.

The method of operation of my complete device is as follows: After the blades 5 have been assembled in the slots 6 on the spindle 2, and the collar 7 and screw 12 set in place to retain them in position, no further adjustment of the parts is required. It is not necessary that the tube C fit the bore of the spindle 2 exactly since the blades 5 are more or less self-conforming. Usually, there is a slight clearance between the periphery of the spindle and the bore of the tube C, and the blades 5 act as centering-devices to hold the tube concentric with the axis of the spindle. That is to say, their inherent spring-tendency adapts them to fit tubes or bobbins having bores of slightly varying diameters, and renders them capable of holding the tube in concentric relation with the spmdle which it surrounds. In applying the tube 0 to the cop-holder, it is only necessary to slide it onto the spindle 2 and the spring-blades 5 will contract slightly durin this action. As the intermediate portion 0 the blades 5 contract into their slots 6, their inner portions will slide to a slight extent through the slots 15 in the collar 7. At the I same time the spring-tendency of the blades will cause their upturned ed es a and b to bite into the material of the tu e, or, in other words, to gripits bore as shownin Figs. 4 and 5. After the tube C has been slid clear onto the spindle 2, with its inner end abutting the collar 7, it is held firmly in place by the sharp edges of the spring-blades 5. On the other hand, if is at all times adapted for convenient removal by merely sliding if off from the spindle, the blades 5 contracting slightly under this action. When the spindle 2 is rotated to wind on the yarn to build up a cop, such as a cylindrical package indicated by dot-and-dash lines A in Fig. 1, the tube 0 will be; turned with it, while the blades 5 prevent any slippage under resistance to its rotation. That is to say, any thrust against the tube. in either direction is met by the engagement of the upturned edges a and b of the blades 5 with its interior surface, and the stronger the resistance, the firmer the blades will bite into the bore of the tube; In this manner my improved holding-means provides a very secure engagement between the cop-tube and the spindle which is automatically effected without requiring the adjustment of expansion-elements or other devices.

My improved device is particularly adapted for use on machines for windin large packages of relatively heavy materia since it provides a firm. grip between the coptube and the winding-spindle to prevent slippa e under severe stresses. Heretofore, it has een the usual practice to em loy expansible spindles or arbors for winding machines, but these require a complication of mechanism, besides necessitating manual adjustment each time a new tube is applied or the finished cop dofi'ed. With my present arrangement it is only necessary to slide the tube onto the spindle, when the grippingmeans take hold automaticall Also, in dofling the cop, it is only required .0 slide the tube ofi from the end of the spindle without the previous release of dogs, springs or other fastening-means. It is also to be noted that my improved cop-holder is extremely simple in construction, providing for ease and economy of manufacture, and the parts are held together through an ingenious arrangement which renders the whole device-practically proof against derangement or getting out or order.

I am aware that it is old in the art to make use of compressible spring-members to grip the interior of cop-tubes, spools or the like to secure them in place on spindles or other mandrels. It is believed, however, that the construction herein shown has distinctive features over and above what has previously been proposed, and that my novel arrangement of the spring-blades and their method of operation constitute a meritorious improvement in the art to which the invention belongs.

Various modifications might be made in the form and structure of the parts of the limiting myself to the exact embodiment shown and described, what I claim is 1. In a holder for cop-,tubes, bobbins, spools or the like, the combination with a mandrel, of spring-blades extending longitudinally thereof, said blades beinlg relatively fiat and twisted spirally on a longitudinal axis to provide upturned edges adapted to engage the interior of the tube or bobbin to secure it rotatively with the mandrel.

2. In a holder for cop-tubes, bobbins, spools or the like, the combination with a spindle formed with longitudinally-extending slots on its periphery, of spring-blades secured in said slots, said blades being rela- 130 tively flat and twisted spirally on a longitudinal axis to provide upturned edges projecting radially outward fromthe periphery of the spindle to adapt them to bItBlIItO the bore of the tube or bobbin when the latter is slid into position the'reover.

3. In a holden' for cop-)tubes, bobbins, spools or the like, the combination with a spindle havin longitudinal slots on its -periphery, of re atively flat spring-blades held at their ends in said slots with their intermediate portions twisted laterally to upset their edges in angular planes whereby they project outwardly from the periphery of the spindle to engage the bore of the tube or bobbin to secure it rotatively thereon.

4. In a? holder for cop-tubes, bo'b bins, spools or the like, the combination with a spindle having a recessed end, of a plurality of spring-blades bent down at their outer ends to hook into the recess in the spindle and twisted spirally throughout their intermediate portions to provide upturned lateral edges extending the greater part of their length, and means to retain the inner ends of the blades in spaced relation around the spindle.

5. In a holder for cop-tubes, bobbins, spools or the like, the combination with a spindle formed with a recessed end, of longitudinally-extending blades having their outer ends bent down and hooked into the recess in the spindle and their intermediate portions twisted spirally to provide upset, lateral edges, and a collar held in position on the spindle surrounding the inner ends of the blades to maintain them in a spaced relation therearound.

6. In a holder for cop-tubes, bobbins, spools or the like, the combination with a spindle formed with a r cessed end, of a plurality of longitudina y-extending blades formed with their intermediate aportions twisted spirally to provide. upset, lateral edges, and having hooks at their outer ends engaging the recess in the spindle, a stud screwed into the end of the spindle to secure the hooked ends of the blades in place, and means for holding the inner ends of the blades in spaced relation around the periphery of the spindle.

7. In a holder for cop-tubes, bobbins,

spools or the like, the combination with a spindle having longitudinally -extending slots on its periphery and a recess at its end, of relatively flat spring-blades twisted spirally on a longitudinal axis, and seated in the slots with their outer ends hooked into the recess in the spindle, and a collar secured on the spindle surrounding the inner ends of the blades to hold them in spaced relation therearound.

In testimony whereof I affix my si ature.

CARL A. BR NK. 

